Motor.



Patented Apr. I7, 1900;

No. 647,78I.

( Nu Modal.)

IN VEN T OR WITNESSES Th2 Noflms PETERS co, vwwoumu. WASHINGTON p. c

UNITED STATES PATENT OFFICE.

MARY ELLEN XANDER, OF PENNSBURG, PENNSYLVANIA.

MOTOR.

SPECIFICATION forming part of Letters Patent No. 647,781, dated April17', 1900.

Application filed May 11, 1899. Serial No. 716,463. (No model.)

To all whom it may concern:

Be it known that I, MARY ELLEN XANDER, a citizen of the United States,residing at Pennsburg, in the county of Montgomery and State ofPennsylvania, have invented certain new and useful Improvements inMotors for Display-Racks; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableoth ers skilled in the art to which it appertains to make and use thesame.

Myinvention is in the nature of a motor for display-racks or any othermachinery in which two parts are to be rotated in opposite directions onan axial line, the object of the invention being to provide a cheap,simple, and effective motor for such purposes.

With this object in view the invention consists in the improvedconstruction, arrangement, and combination of parts hereinafter fullydescribed and afterward specifically pointed out in the appended claim.

In the accompanying drawings, Figure 1 is a top plan view of a motorconstructed in accordance with my invention, parts being shown in dottedlines. Fig. 2 is a view illustrating the motor and parts of thedisplayrack, the top plate of the motor and all the parts above it beingin section on the broken line 2 2 of Fig. 1 and all the parts below theplate in end elevation.

Like numerals of reference mark the same parts Wherever they occur inboth figures.

Referring to the drawings by numerals, 3 indicates the upper and 4 thelower plate of the frame of a spring-motor, said plates being connectedtogether by pins, as is usual, and provided with the bearings of thearbors or shafts, as hereinafter described.

5 indicates the spring by which the motor is driven, secured in theusual manner to a shaft or arbor 6, upon which is a large gearwheel 7,meshing with a pinion 7 a on a shaft 8, which carries a gear-wheel 9,engaging a pinion 9' on a shaft 10, which shaft is coupled to the innerrotating member 11 of a display-rack or other machine to be driven inthe manner hereinafter specified.

The motor herein described is a simple ordinary clock mechanism so faras the spring,

shafts, and gearing between the upper and.

lower plates are concerned, and any other suitable train of gearing maybe used in which the two shafts 8 and 10 are parallel and gearedtogether to be driven in opposite directions.

No special arrangement or construction of the mechanism is preferred tothus drive the shafts 8 and 10, such mechanism forming no part of myinvention. The shaft 8 projects above the plate 3 of the motor andcarries a gear-wheel 12, which meshes with a pinion 13 on a short shaft14, also projecting above the frame of the motor, said pinion engaging agear-wheel 15, mounted loosely on the shaft 10 and supported on aball-bearing, one ring or plate of which is secured on the top of theframe-plate 3 and the other on the under side of the wheel, saidring-plates being provided with opposite registering annular groovescarrying balls 16. The wheel 15 is provided with upwardly-projectingpins or points 17, by means of which it is coupled to the outer member18 of the rack or machinery to be driven. The gear-wheel 9 also engagesa pinion 19 on a shaft 20, carrying a gear-wheel 21, which meshes with apinion 23 on a shaft 24. -A gear-wheel 25 on shaft 24 engages a pinion26 on a shaft 27, carrying a fan-governor 28, which regulates themovement of the motor.

Arrowsare shown in Fig. 1 indicating the direction of rotation of theprincipal gear wheels, and from an inspection thereof it will be seenthat by reason of its connections the shaft 10, which has a square orangular head on its upper end to enter a corresponding socket in thelower end of the shaft of the inner rotating member 11 of the rack ormachine, rotates in the opposite direction to that of the rotation ofshaft 8, and, further, by reason of the interposed pinion 13 thegearwheel15, which carries the member 18 of the rack or machine to bedriven, rotates in the same direction as shaft 8, and consequently inthe opposite direction to shaft 10, thereby causing the two members 11and 18 to rotate in opposite directions. The whole weight of the member11 will be borne by shaft 10, which might be mounted in a step-bearingon balls at its lowerend, and the weight of mem' ber 18 on theball-bearing, the rack or machine thus offering the least possibleinterference with the smooth and easy running of the parts of the motor.

While I have illustrated and described the various details ofconstruction in what at'this time I deem to be the preferred form, Ihold that any slight changes therein or variations therefrom such asmight be made by the ordinary mechanic after inspecting my specificationwill clearly be included within ,the limit and scope of my invention. I

Having thus fully described myinvention, what I claim as new, and desireto secure by Letters Patent of the United States, isr In a motor, thecombination for operating two members of a display-rack in oppositedirections, with the upper plate 3 and lower plate 4 of the motor, of a.train of gearing between the plates comprising two shafts 8 and 10,journaled in the plates and projecting through and above the upperplate, gearwheels on shafts 8 and 10, directly engaging loosegear-wheel, for coupling it to the other member of the display-rack,substantially as d escribed.

In testimony whereof I affix my signature in presence of two witnesses.

MARY ELLEN XANDER.

Witnesses:

E. W. SoHoLL, SALLIE FREY.

